 /*******************************************************************************
  * Copyright (c) 2005, 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.ui.internal.cheatsheets.composite.views;

 import java.net.MalformedURLException ;
 import java.net.URL ;
 import java.util.Dictionary ;

 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.ui.IMemento;
 import org.eclipse.ui.cheatsheets.CheatSheetListener;
 import org.eclipse.ui.cheatsheets.CheatSheetViewerFactory;
 import org.eclipse.ui.cheatsheets.ICheatSheetEvent;
 import org.eclipse.ui.forms.widgets.FormToolkit;
 import org.eclipse.ui.internal.cheatsheets.Messages;
 import org.eclipse.ui.internal.cheatsheets.composite.parser.ICompositeCheatsheetTags;
 import org.eclipse.ui.internal.cheatsheets.state.MementoStateManager;
 import org.eclipse.ui.internal.cheatsheets.views.CheatSheetViewer;
 import org.eclipse.ui.internal.provisional.cheatsheets.IEditableTask;
 import org.eclipse.ui.internal.provisional.cheatsheets.TaskEditor;

 public class CheatsheetTaskEditor extends TaskEditor {
     private CheatSheetViewer viewer;
     private IEditableTask task;

     public void createControl(Composite parent, FormToolkit toolkit) {
         viewer = (CheatSheetViewer)CheatSheetViewerFactory.createCheatSheetView();
         viewer.createPartControl(parent);
     }
     
     public Control getControl() {
         return viewer.getControl();
     }


     public void setInput(IEditableTask task, IMemento memento) {
         this.task = task;
         Dictionary params = task.getParameters();
         String id = (String )params.get(ICompositeCheatsheetTags.CHEATSHEET_TASK_ID);
         String path = (String )params.get(ICompositeCheatsheetTags.CHEATSHEET_TASK_PATH);
         boolean showIntro = true;
         String showIntroParam = (String )params.get(ICompositeCheatsheetTags.CHEATSHEET_TASK_SHOW_INTRO);
         if (showIntroParam != null) {
             showIntro = showIntroParam.equalsIgnoreCase("true"); //$NON-NLS-1$
 }
         
         MementoStateManager stateManager = new MementoStateManager(memento, task.getCompositeCheatSheet().getCheatSheetManager());
         if (path != null) {
             URL url;
             try {
                 url = task.getInputUrl(path);
                 if (id == null) {
                     id = task.getId();
                 }
                 viewer.setInput(id, task.getName(), url, stateManager, false);
             } catch (MalformedURLException e) {
                 String message = NLS.bind(Messages.ERROR_OPENING_FILE_IN_PARSER, (new Object [] {path}));
                 viewer.showError(message);
             }
         } else if (id != null){
             viewer.setInput(id, stateManager);
         } else {
             viewer.showError(Messages.CHEATSHEET_TASK_NO_ID);
         }
         if (!showIntro) {
             viewer.advanceIntroItem();
         }
         viewer.addListener(new TaskListener());
     }
     
     /*
      * Listener for the cheatsheet used by this class
      */
     private class TaskListener extends CheatSheetListener {

         public void cheatSheetEvent(ICheatSheetEvent event) {
             if (event.getEventType() == ICheatSheetEvent.CHEATSHEET_COMPLETED) {
                 task.complete();
             }
         }
     }

     public void saveState(IMemento memento) {
         viewer.saveState(memento);
     }
 }

